Question

please............ye bhi...........​

Answer 1

Answer:

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Step-by-step explanation:

Draw an Altitude AE such that,

E lies on BC and

AE perpendicular to BC

In △AEB

By Pythagoras Theorem,

AB ² =AE²+EB² .....(1)

In △AED

By Pythagoras Theorem,

AD² =AE² +ED² .....(2)

From 1) and 2)

AD² =ED²+AB² −EB² .....(3)

Since, EB= 1/2BC²=AB/2=3/AB and

ED=BC/6=AB/6

∴ AD²=AB²/36 + AB² - 9AB²/36

∴ 9AD² =7AB²